Olympiakos defender Olof Mellbreg is frustrated with the Greek side after they conceded two early goals against Arsenal at the Emirates.
"I thought we had quite a poor start," Mellberg told Sky Sports News.
"They didn't create too many chances and they scored two with the couple that they had.
"It was uphill from there, but we battled back and had a lot of chances. Unfortunately we only managed one goal."
Arsenal are second in Group F behind Marseilles, while Olympiakos are bottom after failing to pick up a point in their opening two matches.